Door silencer



R. P. MORGAN 1 DOOR SILENCER Filed y 192 lmlhb M g nll llll lndnlm v I QI, Q I I "In!" IN I 5.

. e 4 a z D I m ...muln- Patented Dec. 23, 1924,

UNITED STATES tszaias PATENT OFFICE.

ROBERT P. MORGAN, OF WORCESTER, MASSACHUSETTS.

DOOR SILENGER.

Application filed May 26, 1922. Serial No. 563,878.

Commonwealth of Massachusetts, have invented a new and usefulImprovement in a Door Silencer, of which the following, together withthe accompanying drawings, is a specification.

My invention relates to a silencer device that is adapted to be appliedto a door for the purpose of eliminating noise when the door is closed,such a device being useful in hospitals or in other places where thesound of a closing door is objectionable.

The object of my invention is to provide a door silencer that isparticularly simple and inexpensive in construction, and which may bereadily applied to any door without interfering with the working of thelatch or bolt. A further object of my invention is to provide a doorsilencer so formed that diiferent portions thereof may be brought intouse after other portions thereof have been worn, so that a silencer canbe kept in service for a considerable length of time.

In the accompanying drawings,

Fig. 1 is a view in side elevation of a door silencer embodying myinvention.

Fig. 2 is a view in perspective, showing a portion of a door with mysilencer applied thereto.

Fig. 3 is a front view of a door, showing my silencer applied thereto.

Figs. 4 and 5 are transverse sectional views of the door silencer shownin Fig. 1, illustrating the material. of which the silencer is composed.

Like reference characters refer to like parts in the difierent figures.

Referring to the drawings, my improved silencer consists of an endlessband 1 of some flexible, compressible material, such as rubber, the band1 either being tubular in cross section, as shown in Fig. 4 or beingmore or less cellular, as shown in Fig. 5, as when the band is formed ofrubber sponge material.

When applying my improved band to a door, one end thereof is firstpassed around the post 2 of a door knob 3 on one side of a door, afterwhich the band is stretched occurs.

enough to permit the other end thereof to be passed around the post 4 ofthe door knob 5 on the opposite sideof the door, so that the band 1 thenappears as shown in Figs. 2 and 3. With the band 1 in this position, theparallel sides thereof extend around the front edges 6, so that when thedoor is closed the band will pass into the space between the face of thedoor and its casing, and being wedged therein, will tend to hold thedoor closed.

As the door is closed the band prevents any noise which might arise fromeither edge 6 of the door striking that portion of the casing with whichit usually engages when the door is closed, and it is apparent that theside portions of the band 1 will be flattened out around the edges 6, asindicated at 7 owing to the compressible material of which the band isformed. Obviously, any wear on the band 1 will occur at the points 7 andwhen this wear becomes noticeable, it is only necessary to shift theband enough to bring a fresh portion thereof into engagement with thefront edges 6 of the door.

From the foregoing, it is apparent that by my invention I have providedan extremely efi'ective door silencer which, when applied to a door willsubstantially eliminate all noise due to the closing of the door.Furthermore, my improved silencer can be quickly and cheaplymanufactured, and is adapted to give a maximum amount of wear, inasmuchas the whole length of the band 1 can be moved to the points where thewear When the silencer is made in tubular form, as shown in Fig. 5, acertain amount of air is enclosed therein, so that the silencer has apneumatic cushioning eifect when the door is closed and portions of thetube compressed. This pneumatic effect practically eliminates allpossibility of noise.

and will always be present so long as the tube remains intact.

I claim,

1. In a device of the class described, the combination with a doorprovided with knobs on opposite sides thereof, of a door silencerconsisting of an endless tube of elastic material containing air passingaround the said door knobs.

2. in a device of the class described the combination with door providedWith knobs on oopositesides thereof, of a door silencer consisting of anendless rubber tube containing air passing around the said door knobs.

3. In a device of the class described, the

combination with a door provided will: knobs on opposite sides thereofof a door silencer consisting of an endless PnBUHmlilU tube passing fromone door knob to the other around the edges of the door.

ROBERT P. MORGAN.

